Almost half of the electricity in Germany is now generated from renewable energy sources.
According to preliminary calculations by the industry association BDEW and the Stuttgart research institute ZSW, alternative energies covered 49 percent of electricity consumption in the first half of the year.
That is 6 percentage points more than in the same period of the previous year.
By far the most important source of green electricity are wind turbines on land, their share increasing from 17 to 21 percent.
Solar systems increased from 10 to 12 percent, according to figures released on Tuesday.
Total electricity consumption in Germany fell within a year by 2 billion kilowatt hours to an estimated 281 billion.
Sun, wind and other renewable sources generated 139 billion kilowatt hours, while conventional energy sources accounted for 159 billion kilowatt hours.
Figures on the exact shares of coal, gas and nuclear power are not yet available.
The difference between the total of 298 billion generated and the consumed 281 billion kilowatt hours was exported.
BDEW boss Kerstin Andreae called for a rapid expansion of renewable energies in view of the dependence on Russian gas.
"They are the key to a green power and heat supply, an industry that produces hydrogen and climate-neutral mobility." There is an urgent need for action, especially when it comes to onshore wind energy.
"The biggest stumbling block here is still the lack of space."